An electric vehicle charging pile PCBA board with good sealing performance

Abstract

The utility model relates to PCBA board technical field, especially a sealed electric vehicle charging pile PCBA board that good, including sealed casing, the shell top is equipped with the inclined roof that opens. The utility model has the advantages of: through the mutual embedding of sealed cover buckle and the introduction track, the gap can be effectively sealed, the water flow can be guided to one side to slide down through the inclined roof of top in the vertical sealing casing, prevents the water seepage of interface water, through the waterproof slope of bottom, the difficulty and the distance of water seeping from bottom can be improved, the waterproof effect is improved, the heat of circuit board can be fully transmitted to the sealing casing through the insulation heat-conducting silicone grease filled between elastic support frame and circuit board, through the whole sealing casing passive heat dissipation, improve the heat dissipation area, through a plurality of heat dissipation fins can further improve the heat dissipation area, can improve the sealing property while the position higher heat dissipation effect.

Description

Technical Field

[0001] This utility model relates to the field of PCBA board technology, and in particular to a PCBA board for electric vehicle charging piles with good sealing performance. Background Technology

[0002] Printed circuit boards, also known as printed circuit boards or printed circuit boards, are commonly abbreviated as PCB. The entire process of manufacturing a PCB board, including SMT assembly or DIP insertion, is called PCBA. PCBs are important electronic components, serving as the support for electronic components and providing the connection for electronic component circuits. For charging pile PCBA boards, they can effectively control the operation of the charging pile.

[0003] Since electric vehicle charging pile PCBA boards are mostly used and installed outdoors, they are frequently exposed to rain and require a sealed structure. However, most current electric vehicle charging pile PCBA boards are installed using sealed housings, which affects the heat dissipation of the circuit board, making it difficult to release heat and affecting operation. If ventilation holes are opened, moisture will enter, affecting safety. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a PCBA board for electric vehicle charging piles with good sealing performance, which effectively solves the deficiencies of the prior art.

[0005] The purpose of this utility model is achieved through the following technical solution: a PCBA board for electric vehicle charging piles with good sealing performance, comprising a sealed housing, a sloping top at the top of the housing, a waterproof slope symmetrically arranged at the bottom of the housing, guide rails fixedly connected to both sides of the opening of the housing, the tops of the two guide rails being at the bottom surface of the sloping top, a sealing cover slidably connected to the inner walls of the two guide rails, an inclined sealing cover plate fixedly connected to the bottom of the sealing cover that can fit against the waterproof slope, the size of the sealing cover being larger than the size of the opening of the sealed housing, sealing strips fixedly connected to the top and both sides of the sealing cover, an elastic support frame fixedly connected to the middle of the inner wall of the sealed housing, circuit board fixing studs fixedly connected to the four corners of the inner wall of the sealed housing near the outer wall of the elastic support frame, a circuit board fixedly connected to the outer walls of the four circuit board fixing studs, the circuit board covering the outer surface of the elastic support frame, insulating thermally conductive silicone grease filling the space between the inner wall of the elastic support frame and the circuit board, and several heat dissipation fins fixedly connected to the back of the outer wall of the sealed housing.

[0006] Preferably, in any of the above embodiments, fixed support feet are fixedly connected to the middle of both sides of the outer wall of the sealing housing, and one side of each of the two fixed support feet protrudes from the side of the heat dissipation fins away from the sealing housing.

[0007] The technical effect achieved by adopting the above solution is that the fixed support foot can support several heat dissipation fins, allowing airflow to pass through the gaps.

[0008] Preferably, in any of the above embodiments, a fixing plate is fixedly connected to the edge of the bottom of the slope top, and a connecting plate is fixedly connected to the center of the top of the outer surface of the sealing cover. The connecting plate and the fixing plate correspond to each other vertically. A plurality of corresponding connecting holes are opened on the surfaces of the connecting plate and the fixing plate, and locking bolt and nut assemblies are connected to the inner walls of the plurality of connecting holes.

[0009] The technical effect achieved by adopting the above solution is that the connecting plate and the fixing plate can be tightened by locking the bolt and nut assembly, so that the sealing cover is sealed and pressed tightly.

[0010] Preferably, in any of the above solutions, the elastic support frame is made of insulating material, the size of the elastic support frame is smaller than the size of the circuit board, and the heating components of the circuit board are in contact with the insulating thermally conductive silicone grease.

[0011] The technical effect achieved by adopting the above solution is that the elastic support frame can restrict the insulating thermal grease, keeping it stable, while also providing stable support for the circuit board.

[0012] Preferably, in any of the above solutions, both the sealed housing and the plurality of heat dissipation fins are made of thermally conductive materials, and the distribution range of the plurality of heat dissipation fins is greater than the range of the inner wall of the elastic support frame.

[0013] The technical effect achieved by adopting the above solution is that it enables several heat dissipation fins to fully and evenly absorb the heat conducted from the inner wall of the elastic support frame.

[0014] Preferably, in any of the above embodiments, a plurality of downwardly inclined wire-passing holes are provided at the bottom of the inner wall of the sealing housing near the bottom edge of the inner wall of the waterproof slope, and a sealing ring is fixedly connected to the inner wall of each of the plurality of wire-passing holes, and a sealing gasket is fixedly connected to the contact surface between the inclined sealing cover and the waterproof slope.

[0015] The technical effects achieved by adopting the above solution are: the wiring of the circuit board is conveniently passed through several wire holes, while the downward sloping wire holes prevent rainwater from entering, and the waterproof slope increases the difficulty of water flow.

[0016] Beneficial effects:

[0017] 1. This well-sealed electric vehicle charging pile PCBA board, after being fastened with the sealing cover, can effectively seal gaps by interlocking with the guide rail. At the same time, the sloping top allows the vertically set sealing shell to guide water flow to one side and slide down, preventing water accumulation and seepage at the interface. Meanwhile, the waterproof slope at the bottom increases the difficulty and distance for water to seep in from the bottom, thus improving the waterproof effect.

[0018] 2. This well-sealed electric vehicle charging pile PCBA board, through the insulating thermally conductive silicone grease filled between the elastic support frame and the circuit board, can fully transfer the heat of the circuit board to the sealed housing, and passively dissipate heat through the entire sealed housing, thereby increasing the heat dissipation area. At the same time, several heat dissipation fins can further increase the heat dissipation area, which can improve the sealing performance while achieving a high heat dissipation effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a top view of the structure of this utility model;

[0021] Figure 3 This utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA.

[0022] In the diagram: 1-Sealed housing, 2-Sloped top, 3-Inlet track, 4-Sealed cover, 5-Connecting plate, 6-Fixing plate, 7-Heat dissipation fins, 8-Fixing support foot, 9-Waterproof slope, 10-Inclined sealing cover plate, 11-Elastic support frame, 12-Circuit board fixing stud, 13-Insulating thermal grease, 14-Circuit board, 15-Wire hole. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0024] like Figures 1 to 3As shown, a well-sealed electric vehicle charging pile PCBA board includes a sealed housing 1. The top of the housing 1 has a sloping top 2, and the bottom of the housing 1 has a waterproof slope 9 symmetrically arranged with the sloping top 2. The two sides of the opening of the housing 1 are fixedly connected to the guide rails 3. The top of the two guide rails 3 is located at the bottom surface of the sloping top 2. The inner walls of the two guide rails 3 are slidably connected to a sealing cover 4. The bottom of the sealing cover 4 is fixedly connected to an inclined sealing cover plate 10 that can fit with the waterproof slope 9. The size of the sealing cover 4 is larger than the size of the opening of the sealed housing 1. The top and both sides of the sealing cover 4 are fixedly connected to sealing strips. The middle of the inner wall of the sealed housing 1 is fixedly connected to an elastic support frame 11. The four corners of the inner wall of the sealed housing 1 near the outer wall of the elastic support frame 11 are fixedly connected to circuit board fixing studs 12. The outer walls of the four circuit board fixing studs 12 are fixedly connected to a circuit board 14. The circuit board 14 covers the outer surface of the elastic support frame 11. The space between the inner wall of the elastic support frame 11 and the circuit board 14 is filled with insulating thermally conductive silicone grease 13. Several heat dissipation fins 7 are fixedly connected to the back of the outer wall of the sealed housing 1.

[0025] As an optional technical solution of this utility model: fixed support feet 8 are fixedly connected to the middle of both sides of the outer wall of the sealing shell 1. One side of the two fixed support feet 8 protrudes from the side of several heat dissipation fins 7 away from the sealing shell 1, so that the fixed support feet 8 can support several heat dissipation fins 7 and allow airflow to pass through the gap.

[0026] As an optional technical solution of this utility model: a fixing plate 6 is fixedly connected to the bottom edge of the slope top 2, and a connecting plate 5 is fixedly connected to the center of the top of the outer surface of the sealing cover 4. The connecting plate 5 and the fixing plate 6 correspond to each other vertically. Several corresponding connecting holes are opened on the surfaces of the connecting plate 5 and the fixing plate 6. Locking bolt and nut assemblies are connected to the inner walls of the several connecting holes. The connecting plate 5 and the fixing plate 6 can be tightened by the locking bolt and nut assemblies, so that the sealing cover 4 is sealed and pressed tightly.

[0027] As an optional technical solution of this utility model: the elastic support frame 11 is made of insulating material. The size of the elastic support frame 11 is smaller than the size of the circuit board 14. The heating components of the circuit board 14 are in contact with the insulating thermal grease 13. The elastic support frame 11 can restrict the insulating thermal grease 13 to keep it stable, and at the same time, it can stably support the circuit board 14.

[0028] As an optional technical solution of this utility model: the sealed shell 1 and the plurality of heat dissipation fins 7 are both made of thermally conductive materials, and the distribution range of the plurality of heat dissipation fins 7 is larger than the range of the inner wall of the elastic support frame 11, so that the plurality of heat dissipation fins 7 can fully and evenly absorb the heat conducted from the range of the inner wall of the elastic support frame 11.

[0029] As an optional technical solution of this utility model: a number of downwardly inclined wire holes 15 are provided at the bottom of the inner wall of the sealed housing 1 near the bottom edge of the inner wall of the waterproof slope 9. The inner walls of the wire holes 15 are all fixedly connected with sealing rings. The contact surfaces of the inclined sealing cover plate 10 and the waterproof slope 9 are fixedly connected with sealing gaskets. The wire holes 15 facilitate the wiring of the circuit board, while the downwardly inclined wire holes 15 prevent rainwater from entering. The waterproof slope 9 increases the difficulty of water flow entering.

[0030] The working process of this utility model is as follows: When the user uses it...

[0031] 1) After the sealing cover 4 is fastened, the gap can be effectively sealed by interlocking with the guide rail 3;

[0032] 2) The sloping top 2 allows the vertically installed sealing shell 1 to guide water flow to one side and prevent water accumulation and seepage at the interface.

[0033] 3) The waterproof slope 9 at the bottom can increase the difficulty and distance that water seeps in from the bottom;

[0034] 4) The insulating thermally conductive silicone grease 13 filled between the elastic support frame 11 and the circuit board 14 can fully transfer the heat of the circuit board 14 to the sealed housing 1, and passively dissipate heat through the entire sealed housing 1, thereby increasing the heat dissipation area. At the same time, the heat dissipation area can be further increased through several heat dissipation fins 7, which can improve the heat dissipation effect while improving the sealing performance.

[0035] In summary, this utility model effectively seals gaps by fastening the sealing cover 4 and interlocking with the guide rail 3. Simultaneously, the sloping top 2 guides water flow to one side of the vertically positioned sealing shell 1, preventing water accumulation and seepage at the interface. Furthermore, the waterproof slope 9 at the bottom increases the difficulty and distance of water seepage from the bottom, enhancing waterproofing. The insulating thermally conductive silicone grease 13 filling the space between the elastic support frame 11 and the circuit board 14 effectively transfers heat from the circuit board 14 to the sealing shell 1, enabling passive heat dissipation through the entire sealing shell 1 and increasing the heat dissipation area. The numerous heat dissipation fins 7 further increase the heat dissipation area, achieving both improved sealing and efficient heat dissipation.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PCBA board for electric vehicle charging piles with good sealing performance, characterized in that: The enclosure includes a sealed housing (1), with a sloping top (2) at the top and a waterproof slope (9) symmetrically arranged at the bottom. Guide rails (3) are fixedly connected to both sides of the opening of the housing (1). The tops of the two guide rails (3) are located at the bottom surface of the sloping top (2). A sealing cover (4) is slidably connected to the inner walls of the two guide rails (3). An inclined sealing cover plate (10) that fits against the waterproof slope (9) is fixedly connected to the bottom of the sealing cover (4). The size of the sealing cover (4) is larger than the size of the opening of the sealed housing (1). The top of the sealing cover (4)... Sealing strips are fixedly connected to the inner part and both sides of the sealing housing (1). An elastic support frame (11) is fixedly connected to the middle of the inner wall of the sealing housing (1). Circuit board fixing studs (12) are fixedly connected to the four corners of the outer wall of the elastic support frame (11) near the inner wall of the sealing housing (1). Circuit board (14) is fixedly connected to the outer wall of the four circuit board fixing studs (12). Circuit board (14) covers the outer surface of the elastic support frame (11). Insulating thermally conductive silicone grease (13) is filled between the inner wall of the elastic support frame (11) and the circuit board (14). Several heat dissipation fins (7) are fixedly connected to the back of the outer wall of the sealing housing (1).

2. The PCBA board for an electric vehicle charging station with good sealing performance according to claim 1, characterized in that: Fixed support feet (8) are fixedly connected to the middle of both sides of the outer wall of the sealed housing (1), and one side of the two fixed support feet (8) protrudes from the side of several heat dissipation fins (7) away from the sealed housing (1).

3. The PCBA board for an electric vehicle charging station with good sealing performance according to claim 2, characterized in that: A fixing plate (6) is fixedly connected to the bottom edge of the slope top (2), and a connecting plate (5) is fixedly connected to the center of the top of the outer surface of the sealing cover (4). The connecting plate (5) and the fixing plate (6) are vertically aligned. Several corresponding connecting holes are opened on the surfaces of the connecting plate (5) and the fixing plate (6). Locking bolt and nut assemblies are connected to the inner walls of the several connecting holes.

4. The PCBA board for an electric vehicle charging station with good sealing performance according to claim 3, characterized in that: The elastic support frame (11) is made of insulating material. The size of the elastic support frame (11) is smaller than the size of the circuit board (14). The heating components of the circuit board (14) are in contact with the insulating thermal grease (13).

5. The PCBA board for an electric vehicle charging station with good sealing performance according to claim 4, characterized in that: The sealed housing (1) and the plurality of heat dissipation fins (7) are both made of thermally conductive materials, and the distribution range of the plurality of heat dissipation fins (7) is greater than the range of the inner wall of the elastic support frame (11).

6. The PCBA board for an electric vehicle charging station with good sealing performance according to claim 5, characterized in that: The bottom of the inner wall of the sealed housing (1) is provided with several downward inclined wire holes (15) near the bottom edge of the inner wall of the waterproof slope (9). The inner walls of the wire holes (15) are fixedly connected with sealing rings. The inclined sealing cover plate (10) and the contact surface of the waterproof slope (9) are fixedly connected with sealing gaskets.

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